Pile driver



April 14, 1931.

w. G. MUELLER 1,800.397

PILE DRIVER w Filed July 2a, 1929 5 Sheets-Sheet 1 G a Z5 5 m !ll N 1 a ismllmln'm w im. Tn" 4px 4] 4i 4 L. Y

FIG. 1. FIG. 2.

gwuefltou April 14, 19 1. w, M ELLER 1,800,397

' PILE DRIVER Filed July 28, 192's 5 Sheets-Sheet 3 atto'z 1 w 1 Kalle/2 Patented Apr. 14,. 1931 UNITED STATES PATENT o-FFIcEJ WILLIAMG. MUELLER, or nnnvnn, coLonAno; Assrenon T GARDNER-DENVER com- IPANY, or DENVER, oo onsno, A oon-ronnrron or DELAWAR PILn- DRIVER.

Application filed July as,

The present invention relates to means for driving piles,.pa-rticularly sheeting and the like, and the objectis to provide a simple, novel and effective structure that can be used on sheeting or other articles of different thicknesses and can be further employed in confined places. 1

In the accompanying drawings, the preferred embodiment of the invention is disclosed, and in saiddrawings Figure 1 is a view in elevation showing the structure in place on an. article being driven. Figure 2 is a view atright angles to Figure 1. r

F iguref3 is a longitudinal sectional View through the implement and showing the same on an enlarged scale.

IFigure 4 is a side elevation of the lower portion of the same.- I

,Figure 5 is a cross sectional view on the line 55'of Figure 3.

Figure 6 is an end view of the spacer.

Figure 7 is a view of the other end.

Figure 8 is a side elevation of the head chamber member. 1 a i Figure 9 is a side elevation of the same.

Figure 10 is a top plan view of the head chamber member. v

' In the disclosure, the tool comprises a'cylinder member 11 having therein a piston chamber 12, and in said piston chamber'is areciprocatory hammer piston 13. Motive fluid supplied to this'piston chamber 12 1n any well known manner effects the reciprocation of the piston 13, as is well understood. The lower end of the cylinder member 11 is'reduced in diameter to form a longitudinally disposed annularifiange 14. v

A spacer 15 is employed, having an enlarged upper end 16 that receives the reduced end portion or flange 14 of the cylindermember 11. -In this spacer 15 is fitted a bushing 17 having a flanged upper end. 18 that is interposed between the end 14 of the cylinder member and a shoulder 19 formed by the bottom of the enlargement 16. This bushing, it will'be noted, extends substantially the length of the spacer though it preferably terminates just short of its lower end. The

spacer15'is held on the lower end of the 1928. Serial No. 296,047.

cylinder member by side bolts 20 that pass through oppositely projecting ears 21 formed on the upper end of said spacer. These side bolts extend along the opposite sides of the t1on (see Figures 1 and 2) Rising centrally from this cap portion is an integral vertical leg 24, which though it projects slightly be yond the plane of the adjacent side of the cylinder member 11, is very close to being in alinement therewith. An oppositeintegral leg 25 also risesfrom the cap portion 23' l and well outside the verticalplane of the underlying side of the cylinder member 11. The two legs 24:,and 25 are connected by a transverse handle grip portion 26. The-lower.

inwardly extending portion of the leg 25 is preferably provided with an inlet 27 for motive fluid supplied to the piston chamber 12,

and the handle grip 26 may have a lubricant reservoir 28, which is in communication through apassageway 29 in the leg 25 with the motive fluid supply passageway 27. x

The bushing 17 that is located in the spacer 15 has a centrally disposed bore 30, the upper.

end portion of said bore being reduced; in cross sectional diameter as shown at 31. In this bore 3031 is fitted a tappet comprising a lower body portion 32 with a reduced stem; 33 that extends through the reduced portion 31 of the bore and projects into the lower end of the piston chamber 12 and in the path of the piston 13.

The above described structureconstitutes a fluid operated tool, preferably intended tov be driven by air and it will be evident that when motive fluid is distributed to the piston chamber 12 the piston 13 will be rapidly reciprocated and hammer upon the tappet 32 33;

The lower end of the spacer 15 is substantially rectangular in cross, section and is provided at its corners with ears 3 1" (see Figure 6) Fitted to the lower end of said spacer is a head chamber member 35 comprising a casing that is also rectangular in cross sectionand is provided at its corner with ears 36 (see Figure 10) alining with the ears 34 and receiving stud bolts 37 that tie the spacer and member 35 together in alined relation. The interior chamber 38 of the member 35 has loosely located therein a head block 39, theupper end of which is abutted against by the lower end of the tappet 32 This head block not only is capable of longitudinal reciprocation, but as will be clear by reference to Figure 3 has a loose enough fit to permit some lateral play. It is preferably provided with a spur 40 projecting below its lower end and adapted to enter the upper end of a pile 41 or like article to be driven. The head member 35 has one of its wider side walls extended downwardly beyond the chamber '38 as shown at 42 to form a guide that bears against one side of the pile 41. This extension 42 is provided at its upper end with a shoulder43 constituting an abutment for the head block 39 that prevents said abutment dropping from the chamber 38. The opposite wall of the chamber member 35 is provided with an opposite offset 44 constituting a step on which a workman may stand. This step also performs the function of'a support for an adjustable guide, said guide comprising a bracket 45 with a depending guide plate 46 that cooperates with the guide extension'42 and a horizontal plate 47 that fits against the un derside of the step 44. This wall 47 is slotted,

. as illustrated at 48 and through the slots pass securing bolts 49 that pass through the step '44. The heads 50 of-thes'e bolts are located insockets 51 formed in the step (see Figure 5), and it will be noted that the heads are offset from the shanks of the bolts so "as to prevent the rotation of said bolts. More than that it will be observed by reference to Figures 2 and 3 that the wall 47 of the bracket has an upwardly disposed terminal portion 52 that alines with the step 44 and constitutes an extension thereof.

Now it will be observed by reference to Figures 2 and 3 that the step 44-52 is lo cated below the offset portion 25 of the handle 22 or in other'woros is on the same side of the tool, leaving the opposite side substantially without any lateral projecting portions of moment. However, the guide 42 is provided with bolt openings 53, in which bolts 54 may be placed and these bolts 54 can be used for securing a step 55 to the tool, said step projecting opposite to th step 4452.

The structure above described is adapted for successful use under many conditions that are metwith. In driving piling and particularly sheeting wherethe space about the top of the pile to be driven is ample,

both steps can be used as shown in Figure 2,. and the workman can therefore stand on the tool and put a balanced pressure thereon. When, however, an adjacent wall or a second row of sheeting is very close to that being-driven, then the step 55 and the bolts 54 may be removed, leaving as above stated one side of the tool without material lateral projection so that the said tool can be used in exceedingly confined places. :More than that the handle is such that it will not interfere either with an obstruction behind it or thecnext pile of the row, (see Figure 1).

The adjustable guide 46 moreover makes the implement adaptable for successful use on piles or sheeting of different thicknesses.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be under stood that various changes in the size, shape,

proportion and minor details of construc-' arable from and located on the lower end of the spacing sleeve and having means for straddling the article to be'driven, meanszfor securing the head chamber member to the spacing sleeve, said means being separate from the means that secures the sleeve "to the cylinder member, a head in the head chamber, and a tappet in the spacing sleeve interposed between the piston and head and transmitting the kinetic energy of the blows of the former to the latter. j

2. In a pile driver, the combination with a driving tool comprising a cylinder member and a fluid operated piston therein, of a spacing sleeve secured to the lower end of the cylinder member, a head chamber mem ber separable from and located on the'lower end of the spacing sleeve, and'having'means for straddling the article to be driven, means for securing the head chamber member to the spacing sleeve, said means being separate from the means that secures the sleeve to the cylinder member, a head in the head chamber, and a tappet in the spacing sleeve interposed between the piston and head and trans mittingthe kinetic energy of the 'blows of the former tothe latter, the tappet being removable from the lower end of the'sleeve and the head being removable from the upper end of the chamber member when thesleeve and chamber member are separated.

3. In a pile dr1ver,the combination with a driving tool comprising a cylinder member the sleeve and chamber member are sepaand a fluid operatedpiston therein, of a spacing sleeve secured to the lower end of the cylinder member, a head chamber member separately secured to the lower end of the spacing sleeve, a bushing in the sleeve having a portion clamped by and between the cylinder member and sleeve, the lower end of the chamber member being slotted to straddle a pile, a tappet in the bushing having a reduced rearward extension for engagement by-the piston, a head in the head chamber engaged by the tappet and operating on the article straddled by the head chamber member, said tappet being removable from the front end of the sleeve and the head being removable from the rear end of the chamber member when rated.

4. In a pile driver, the combination with a driving tool, of means for mounting the tool I r a driving tool, of means for mounting the tool on the article to be driven including a flanged portion forming a step for the operator, and a guide bracket for the article driven, adjustably mounted on the underside of the step. I

6. In a pile driver, the combination with a driving tool having a piston, of a chamber member carried by its lower end, a head in the chamber of the member operated on bythe piston and operating on the article to be driven, a guide for such article depending from one side of the head chamber, an outstanding step projecting from the other side of the head chamber, and a guide coacting.

guide and adjustably mounted. I,

with the first on the step.

7. In a pile driver, the combination with a driving tool having a piston, of a chamber member carried by its lower end, a head in the chamber of the member operated on by the piston and operating on the article to be driven, a guide for such article depending from one side of the head chamber, an outstanding step projecting from the other side of the head chamber, and a guide coactingwith the first guide and adjustably mounted on the step, said guide projecting beyond the step and constituting an extension of the same.

In testimony whereof, I affix my signature.

WILLIAM G. MUELLER. 

